zlib 1.2.4.4

[zlib.git] / zconf.h.in

diff --git a/zconf.h.in b/zconf.h.in
index 1988920109fdf633e3f316160ad91923eaeb0d6b..f5a6c87251f6928ef46d2a9e01a865a5daa47e54 100644 (file)
--- a/zconf.h.in
+++ b/zconf.h.in
@@ -315,7 +315,7 @@
 #  endif
 #endif
 
-#ifdef HAVE_VISIBILITY_PRAGMA
+#ifndef NO_VIZ
 #  define ZEXTERN __attribute__((visibility ("default"))) extern
 #endif
 
@@ -368,6 +368,16 @@ typedef uLong FAR uLongf;
 #  include <sys/types.h>    /* for off_t */
 #endif
 
+/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
+ * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
+ * though the former does not conform to the LFS document), but considering
+ * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
+ * equivalently requesting no 64-bit operations
+ */
+#if -_LARGEFILE64_SOURCE - -1 == 1
+#  undef _LARGEFILE64_SOURCE
+#endif
+
 #if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
 #  include <unistd.h>       /* for SEEK_* and off_t */
 #  ifdef VMS